Submission #572742

#	Time	Username	Problem	Language	Result	Execution time	Memory
572742		snasibov05	Aliens (IOI07_aliens)	C++14	20 / 100	5 ms	288 KiB

aliens

#include <bits/stdc++.h>

using namespace std;

bool ask(int x, int y){
    cout << "examine " << x << " " << y << endl;
    string str; cin >> str;
    if (str == "true") return true;
    else return false;
}

int main() {
    int n, x0, y0; cin >> n >> x0 >> y0;

    int xt = x0, yt = y0, xb = x0, yb = y0;
    while (xt > 1 && ask(xt-1, y0)) xt--;
    while (xb < n && ask(xb+1, y0)) xb++;
    while (yt > 1 && ask(x0, yt-1)) yt--;
    while (yb < n && ask(x0, yb+1)) yb++;

    int sz = xb - xt + 1;

    while (true){
        if (xt-sz >= 1 && yt - sz >= 1 && ask(xt - sz, yt - sz)) xt = xt - sz, yt = yt - sz;
        else if (xt + sz <= n && yt - sz >= 1 && ask(xt + sz, yt - sz)) xt = xt + sz, yt = yt - sz;
        else break;
    }

    int xres = xt + 2*sz + sz / 2;
    int yres = yt + 2*sz + sz / 2;
    cout << "solution " << xres << " " << yres << endl;

    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10